4555000991 has 2 divisors, whose sum is σ = 4555000992. Its totient is φ = 4555000990.

The previous prime is 4555000969. The next prime is 4555000993. The reversal of 4555000991 is 1990005554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4555000991 - 2¹⁸ = 4554738847 is a prime.

Together with 4555000993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4555000993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2277500495 + 2277500496.

It is an arithmetic number, because the mean of its divisors is an integer number (2277500496).

Almost surely, 2^4555000991 is an apocalyptic number.

4555000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4555000991 is an equidigital number, since it uses as much as digits as its factorization.

4555000991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 4555000991 is about 67490.7474473353. The cubic root of 4555000991 is about 1657.6626745026.

The spelling of 4555000991 in words is "four billion, five hundred fifty-five million, nine hundred ninety-one", and thus it is an aban number.